We found 8 dictionaries that define the word butterfly valves:

General (6 matching dictionaries)

1. butterfly valves: Merriam-Webster
2. butterfly valves: Collins English Dictionary
3. butterfly valves: Vocabulary.com
4. butterfly valves: Wiktionary
5. Butterfly valves: Wikipedia, the Free Encyclopedia
6. butterfly valves: TheFreeDictionary.com

Computing (1 matching dictionary)

7. butterfly valves: Encyclopedia

Tech (1 matching dictionary)

8. Glossary of Landscape Irrigation Terms (No longer online)

(Note: See butterfly_valve as well.)

Definitions from Wiktionary (butterfly valve) ▸ noun:  A valve with a disk-shaped mechanism which can be used for isolating or regulating flow. ▸ Also see butterfly_valve ▸ Words similar to butterfly valves ▸ Usage examples for butterfly valves ▸ Idioms related to butterfly valves ▸ Wikipedia articles (New!) ▸ Words that often appear near butterfly valves ▸ Rhymes of butterfly valves ▸ Invented words related to butterfly valves